IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 8 April 2026 Part 1 Warnings Refer to latest warnings for boundary of affected area and type of weather system. Melbourne Gale Warning 2. Melbourne Gale Warning 4. Part 2 Situation at 081800 UTC Trough [1] 41S080E 50S087E. Forecast trough [1] 30S082E 40S090E 50S096E at 100000UTC. Trough [2] near 33S092E 37S094E 41S092E. Forecast trough [2] weakening near 35S098E 41S100E at 091800UTC. Part 3 Forecast Refer to latest warnings for details of the area affected. East of line 50S110E 37S119E 33S129E, outside of warning areas: Southwesterly quarter winds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. South of line 45S080E 50S093E, outside of warning area: Westerly quarter winds, shifting northerly east of trough [1]. Wind speed 25/33 knots, easing below 25 knots at 091200UTC. Rough to very rough seas. Moderate to heavy swell. Within 120nm of trough [1]: Northwesterly quarter winds east of trough [1], shifting westerly quarter west of trough [1]. Wind speed 20/30 knots. Rough seas. Moderate swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of troughs, north of line 17S090E 17S114E, and south of line 50S110E 37S119E 33S129E. Visibility reducing below 2nm in precipitation. Please be aware Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. WEATHER MELBOURNE The next routine forecast will be issued at 09:00 UTC Thursday.